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Bronze-processed niobium-tin with addition of germanium to matrix.

Author(s) : TACHIKAWA K., TERADA M., ENDO M., MIYAMOTO Y.

Type of article: Article

Summary

The simultaneous addition of tantale, hafnium and titanium to the niobium core has been carried out. The critical-current density of niobium-tin was appreciably increased by the addition of germanium. The simultaneous addition of 0.5 at% germanium to the matrix and 1 at% tantale to the core enhances the critical-current density of niobium-tin at 12 T by one order of magnitude. This increase seems to be attributed to the grain refinement of niobium-tin by the addition of germanium. The formation of a thin layer richer in germanium is observed in the matrix adjacent to the niobium-tin layer, which may be effective in reducing the proximity effect between niobium-tin filaments in cases of alternating-current use.

Details

  • Original title: Bronze-processed niobium-tin with addition of germanium to matrix.
  • Record ID : 1993-2430
  • Languages: English
  • Source: Cryogenics - vol. 33 - n. 2
  • Publication date: 1993

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